A stone is thrown vertically upwards. It decelerates at a rate of 9.8m/s. It reaches a greatest

An air compressor and takes atmospheric Air at 14.7 PSI and increases its pressure to 150 psi ( Gauge). the pressurized air is s

Yuliya22 [10]

Answer:

The absolute pressure of air inside the tank is 164.7 psi.

Explanation:

Given that,

Atmospheric pressure = 14.7 Psi

Gauge pressure = 150 psi

We need to calculate the absolute pressure of air inside the tank

Using formula of absolute pressure

$P_{ab}=P_{g}+P_{atm}$

Where, $P_{g}$ = gauge pressure

$P_{atm}$ =atmospheric pressure

Put the value into the formula

$P_{ab}=150+14.7$

$P_{ab}=164.7\ psi$

Hence, The absolute pressure of air inside the tank is 164.7 psi.

3 0

3 years ago

A car, starting from the origin, travels

sweet [91]

Answer:

The net displacement of the car is 3 km West

Explanation:

Please see the attached drawing to understand the car's trajectory: First in the East direction for 4 km (indicated by the green arrow that starts at the origin (zero), and stops at position 4 on the right (East).

Then from that position, it moves back towards the West going over its initial path, it goes through the origin and continues for 3 more km completing a moving to the West a total of 7 km. This is indicated in the drawing with an orange trace that end in position 3 to the left (West) of zero.

So, its NET displacement considered from the point of departure (origin at zero) to the final point where the trip ended, is 3 km to the west.

8 0

3 years ago

Read 2 more answers

During a certain comet’s orbit around the Sun, its closest distance to the Sun is 0.6 AU, and its farthest distance from the Sun

Ray Of Light [21]

Answer:

At the closest point

Explanation:

We can simply answer this question by applying Kepler's 2nd law of planetary motion.

It states that:

"A line connecting the center of the Sun to any other object orbiting around it (e.g. a comet) sweeps out equal areas in equal time intervals"

In this problem, we have a comet orbiting around the Sun:

- Its closest distance from the Sun is 0.6 AU

- Its farthest distance from the Sun is 35 AU

In order for Kepler's 2nd law to be valid, the line connecting the center of the Sun to the comet must move slower when the comet is farther away (because the area swept out is proportional to the product of the distance and of the velocity: $A\propto vr$ , therefore if r is larger, then v (velocity) must be lower).

On the other hand, when the the comet is closer to the Sun the line must move faster ( $A\propto vr$ , if r is smaller, v must be higher). Therefore, the comet's orbital velocity will be the largest at the closest distance to the Sun, 0.6 A.

7 0

3 years ago

In this problem, you will answer several questions that will help you better understand the moment of inertia, its properties, a

scoundrel [369]

Answer:

a) Total mass form, density and axis of rotation location are True

b) I = m r²

Explanation:

a) The moment of inertia is the inertia of the rotational movement is defined as

I = ∫ r² dm

Where r is the distance from the pivot point and m the difference in body mass

In general, mass is expressed through density

ρ = m / V

dm = ρ dV

From these two equations we can see that the moment of inertia depends on mass, density and distance

Let's examine the statements, the moment of inertia depends on

- Linear speed False

- Acceleration angular False

- Total mass form True

- density True

- axis of rotation location True

b) we calculate the moment of inertia of a particle

For a particle the mass is at a point whereby the integral is immediate, where the moment of inertia is

I = m r²

4 0

3 years ago

The outward pressure of hot gas in the sun is

Ivenika [448]

<h3><u>Answer;</u></h3>

is balanced by the inward gravitational pressure.

<h3><u>Explanation;</u></h3>

The outward pressure of hot gas in the Sun is balanced by the inward gravitational pressure.
<em><u>The sun's output is so stable because of hydrostatic equilibrium. The outward pressure of hot gas comprising the sun exactly balances the force of gravity which tries to make the sun grow smaller.</u></em>
When the star such as the sun shrinks,the core pressure and temperature increase and this increases the pressure, resisting the shrinkage. On the other hand, when the star swells, the core pressure and temperature drop and reduce the pressure, and gravity makes the star stop swelling.

3 0

3 years ago